the following data is given based on 450 students mark kn statistics and economicat a certain examination mean matks in statistics is 40, mean mark in economics is 48 . sd of statistics is 12, variances of economic is 256 sumof products of deviation of marks from their respective mean is 122
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(b) The following data based on 450 students, are given for marks in Statistics and Economics at a certain
examination :
Statistics Economics
Mean marks 40 48
Standard deviation 12 16
Sum of the product of deviation of marks from their respective mean is 42075. Prepare two regression
equations.
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